code: def ResNet18_vd(**args):
      model = ResNet_vd(layers=18, **args)
      return model
  
imports: import paddle
  import paddle.nn
  import paddle.nn.functional
  from paddleseg.cvlibs import manager
  from paddleseg.models import layers
  import ppmatting
label_desc: Use image node_id 1 for calling a global function with example usage: ResNet18_vd() and returns: model